def test_error(self):
def fails_internally(x): # <- Helper function.
raise TypeError('raising an error')
function = lambda x: _check_callable(fails_internally, x)
with self.assertRaises(TypeError):
self.assertFalse(function('abc'))
def test_function(self):
def divisible3or5(x): # <- Helper function.
return (x % 3 == 0) or (x % 5 == 0)
function = lambda x: _check_callable(divisible3or5, x)
self.assertFalse(function(1))
self.assertFalse(function(2))
self.assertTrue(function(3))
self.assertFalse(function(4))
self.assertTrue(function(5))
self.assertTrue(function(6))
def test_identity_with_error(self):
def fails_internally(x): # <- Helper function.
raise TypeError('raising an error')
function = lambda x: _check_callable(fails_internally, x)
self.assertTrue(function(fails_internally))
def test_identity(self):
def always_false(x): # <- Helper function.
return False
function = lambda x: _check_callable(always_false, x)
self.assertTrue(function(always_false))
